There have been renewable “green” jet fuel tests in the past. However, they were not completely renewable, they were just used in addition to jet fuel to offset petroleum usage. This time it however was completely offset, resulting in an important aviation milestone.
According to the National Research Council of Canada (NRC), the world’s first civil flight on a Falcon ReadiJet fueled by 100% renewable biofuel emitted significantly less pollutants than it would when using conventional jet fuel. The jet flew at an altitude of 30,000 feet, which is similar to that of regular commercial jets.
The jet engines needed no modification, and operated slightly more efficiently (1.5% more) than they do on conventional jet fuel, which is petroleum-based. It didn’t need modification because the renewable fuel, sourced from trilyercides found in animal fat and crop oils, meets the specifications of petroleum-based fuels.
Data collected during the flight by an F33 jet that tailed it showed that the aerosol emissions reduction was 50%. During a static test on an engine, the overall particle reduction was up to 25%, and the black carbon emissions were reduced by up to 49% with a comparable engine performance.
Black carbon is a major component of soot (and smoke) which may cause respiratory problems and accelerate climate warming.
A catalytic hydrothermolysis (CH) process that converts triglycerides such as crop oils and animal fats to non-ester biofuels or intermediates with Chevron Lummus Global’s ISOCONVERSION process. This creates a drop-in biofuel that is ready for use in diesel and jet engines at 100% concentration, eliminating the need for petroleum-derived fuels.
Source: Green Car Congress